Lakshmi energy and environmental designs limited

Sulur, Coimbatore, Tamil Nadu

We are offering ultra filtration unit. ultra filtration unit with automatic back wash options. When a pre-set value is achieved the system will kick start back wash operation. A defined sequence of different operating modes is characterized as filtration cycle. After a specified number of filtration cycles, a chemical enhanced backwash occurs.

We are offering clarifiers. sedimentation is the term applied to the separation of suspended particles that are heavier than water, by gravitational settling. In the case of the proposed biological wastewater treatment, it is used for the removal of the activated sludge flocs, and it is carried our in a settling basin, called secondary clarifier.

We are offering resin filters. by placing resin filters downstream of a biological treatment plant a reduction of 20 - 50 % of c.o.d. And a great colour removal are achieved

We are offering effluent treatment plant. Panta rei water solution is a company involved in the sector of the design and construction of water and waste water treatment plants. We are specialized in design, construction and after sales service support for zero discharge effluent treatment plant for textile industries.

We are offering sewage treatment plant. panta rei water solution is a company involved in the sector of the design and construction of water and waste water treatment plants. We are specialized in design, construction and after sales service support for zero discharge effluent treatment plant for textile industries.

We are offering sludge dewatering - centrifuge.

We are offering automatic ph controllers. The removal of excess acidity or alkalinity by a chemical agent is called neutralization. Industrial waters that were exposed to extremely high or low ph values require a neutralization process before they can be sent to a biological treatment or the environment. The equipments used for the ph correction are the ph meter and the dosing pumps. Depends on the inflow ph it will pump acid/lime to neutralize the ph.

We are offering sludge dewatering belt press. the sludge dewatering is a physical unit operation that reduces the water content in thesludge. Belt press is an alternative method for filter press.

We are offering channel brush screen. a screen is a device with openings, generally of uniform size, that is used to retain solids found in the influent wastewater to the treatment plant or in combined wastewater collection systems subject to overflows, especially from storm water.

We are offering sand removers. the screens act as filters which block the larger solid particles in order to prevent them from entering the treament. If they did they could damage the equipment (especially the pumps) and settle in the tanks, creating undesirable matter deposits on the bottom

We are offering disc diffuser. The air diffusers are discs with a special epdm membrane that create micro bubbles. These micro bubbles increase greatly the air water contact surface, thus improving the oxygen transfer rate to water and then the oxygen transfer rate between the water and the bacteria that needs it in order to perform the biological oxidation and remove the pollutants from water.

We are oiffering blower with canopy. Positive displacement blowers for activated sludge process with maximum air outflow at higher pressure with minimum noise. These are lubricant free and air cooled for longer life and running time. Provisions are available to integrate with dissolved oxygen meter for monitoring and controlling dissolved oxygen in the aeration tank.

We are offering sludge dewatering filter press.the sludge dewatering is a physical unit operation that reduces the water content in the sludge. Through a filter press, the sludge is dewatered due to the pressure applied; the resulting matter has a solid content of 25% or more.

We are offering air diffusers. the air diffusers are discs with a special epdm membrane that create micro bubbles. These micro bubbles increase greatly the air water contact surface, thus improving the oxygen transfer rate to water and then the oxygen transfer rate between the water and the bacteria that needs it in order to perform the biological oxidation and remove the pollutants from water.

Bio Oil Plant
New Possibilities

Fast pyrolysis technology is used to convert plant residues to bio-oil which can be used as fuel in boilers & furnaces.

Bio-oil generated when bio mass heated in the absence of air at temperatures between 450 and 500 degree Celsius for a very short period of time (less than 2 seconds) and then condensing the resulting vapors within 2 seconds.
The plant residue which can be used are palm residues, dried sludge, pine, beech, oak, poplar, switch grass, olive pits, sorghum, and leather wastes.
LEED provide total solution for bio-oil plant design, installation and commissioning.

Zero Discharge Plants

Waste water recycling is the only holistic solution to the water scarcity and can meet the growing demand for good quality water even as water scarcity and pollution increases. Water scarcity is a global problem that needs no introduction. With increasing population and pollution of surface & ground water sources, the problem is aggravated with each passing day. Indiscriminate industrial development and exploitation of limited water sources are compelling every industry to seriously address the problem. Availability of water itself has become a serious threat. Therefore industries are considering many options to reduce their water usage and to recycle water to the extent possible, including selection of manufacturing technologies, which use minimum water and produce less waste water.

Biological ETP

The water is sent to the biological oxidation tank through gravity that guarantees a homogenous flow to the biological oxidation treatment. The biological oxidation is the most important phase of the treatment; here the main activity is the biological oxidation, in order to achieve the degradation of the pollutants that are present in the water flow, which takes place in the following order:
1.Bacterial cells assimilation2.Total biodegradation or mineralization3.Partial biodegradation4.Co-metabolisms5.Bio-absorption by solid matrixes
The oxygen transfer from the gaseous phase to the liquid phase (water) is a crucial part of the wastewater treatment, especially when it is performed by the activated sludge. Since the solubility of oxygen in water is low, and thus the natural oxygen transfer is low, the oxygen that is necessary for the biological process oxidation does not enter the water naturally, also because the air-water interface is very limited, thus additional interfaces need to be created in order to carry out the process. Oxygen can be supplied as pure bubbles or as air. The air bubbles are generally chosen instead of the pure oxygen bubbles since the cost is much lower. The air is provided through blowers; once the air supply has been sent through the air piping, it arrives to the air diffusers.

Desalination Plants

The reverse osmosis is the finest water treatment since it can reduces the dissolved solids concentration by applying the necessary pressure to beat the osmotic pressure, and thus it creates two streams: concentrated brine and a purified water stream. This procedure can be used even to treat the seawater, remove the excess and then make it suitable for human consumption. For the specific case of wastewater treatment, it generates high quality water that can be used for the industrial process all over again.

Plant automation

A process control or automation system is used to automatically control a process such as chemical, oil refineries, paper and pulp factories. The PAS often uses a network to interconnect sensors, controllers, operator terminals and actuators. Process automation involves using computer technology and software engineering to help power plants and factories in industries as diverse as paper, mining and cement operate more efficiently and safely.

Organic Waste Water Converter (OWC)

Composting is the process of controlled aerobic decomposition of biodegradable organic matter. During composting, microorganisms break down organic matter into carbon dioxide, water, heat, and compost. OWC converts the organic waste into odourless, precompost manure in 15-20 minutes. The shredder reduces the organic waste into the optimum particle size for composting. Then it is mixed and blended for a homogeneous mixture and is converted into pre compost manure in 20 minutes.
The pre compost manure is then fed into aerated compost blocks and left for 20 days. The compost blocks are specially designed for the pre compost manure to have proper aeration and suitable environment to mature. At the end, we get manure rich in nutrient derived out of Wasted Organics.

Filters

The sand filtration removes the suspended solids from the effluent coming from the secondary clarifier. During filtering operations the retained solids cause an increase of head losses; when a pre-set value is achieved (usually 1.0 bar) backwashing with filtered water by manual takes place.

Reverse Osmosis

The reverse osmosis treatment generally is applied to desalting of seawater and brackish water destined to human consumption, low pressure boiler feeding, feeding of ion exchange demineralization plants and other processing use.
The aim of the treatment by inverse osmosis is reduction of 95 - 98% of dissolved salts and removal of bacterial charge from clear (filtered) water. The process of reverse osmosis is based on the peculiarity of half-permeable membranes, which water (or other solvents) is passing through, while molecules are retained as well as the ions of the dissolved solids.

In normal conditions, when such a membrane is inserted between an aqueous solution and water, due to the pressure difference caused by difference on density the solvent is passing through the membrane to the solution (direct osmosis). The separation of the solvent from the solute can be obtained by means of large pressure difference due to the application on the more concentrated solution of a higher pressure than the pressure of the other side of the membrane (reverse osmosis).

The velocity of solvent passage results to be much higher as higher is the pressure difference. Also many dissolved solids are diffused through the membranes in the lower concentration side. The process of reverse osmosis allows the water purification and dissolved solids concentration operations without any change in status and with a low consumption of energy.

The separation process is obtained by means of a high pressure pumping of the dissolved solids solution to be treated; from membrane-type devices, called modules, two different flows under the influence of the pressure are obtained. The first flow (the orthogonal one) is passing through the membrane and at the outlet high reduction of salts and organic take place, while the second flow (the tangential one) is passing over the surface layer before the membrane.

Two final results are obtained from the feeding flow through the system: the so called product (more diluted) and the concentrate.

The performance of a reverse osmosis plant is related as first to the average capacity of product (the permeated flow) and to the concentrate (the rejected flow) of the membranes.

Permeated flow and rejected flow are mostly due to the peculiarity of the used membranes (permeability to liquids, impermeability to solids), but at the same time they are also affected by the chemical and physical conditions of the process, such as pressure, temperature, pH, concentration and composition of the feeding solution.

In other words the permeated flow:Increases (or decreases) according to the temperature and it is connected to the viscosity. The variation index changes according to different types of modules, and it is usually supplied in a table. If the temperature of the feeding solution changes frequently, it is often necessary to adjust the running conditions; this is a disadvantage for the manually adjusted plants.

Increases if the running pressure increases: it not always convenient or possible to work at high temperatures; still, the pressure-resistance limits of the modules must be always taken into consideration.

Decreases if the concentration of the feeding solution increases: however, unlike the temperature, the relation between the two cannot be generalized.

Decreases over the time, due to progressive irreversible degradation of the membranes; when the permeated flow increases and its quality decreases, it means that the active layer of the membrane has been worn or oxidized.

The quality of the permeated flow depends mainly on the rejection of the membranes: the rejection is sized through the ratio between the difference in concentration between feeding solution and permeated flow and the feeding solution concentration. The rejection factor is dimensioned usually with reference to a single component like sodium chloride.

The rejection flow:Increases when the pressure increases, as this affects the difference between the velocity of water and the velocity of solids through the membranes. Slightly decreases when the temperature rises.

Decreases over the time, due to the progressive surface fouling of the membranes it is affected by pH variation of the feeding solution. Generally little affected by variations of solids concentration, as long as such concentration does not increase remarkably near the surface of the membranes.The quality of the permeated flow does not depend only on the rejection: even if the rejection is constant, the concentration of the permeated flow could increase or decrease according to the concentration variations of the feeding solution. As inside the modules (especially if placed in series) the concentration increases gradually from the inlet to the outlet, the permeated flow will get progressively worse. It is therefore clear that the actual performances of the plant in terms of productivity and quality (concentration) of the parameters depend also on the recovery factor (or conversion factor). Such a factor describes the quantity ratio between permeated flow and feeding solution concentration.

Whatever deviation of the recovery factor from the fixed value, due to either a specific decision of the operator or external reasons, will always produce variations in the quality of the permeated flow.

Although the flow is steady, an eventual worsening of the quality of the permeated flow (which is immediately recognized by an increase in the conductivity), can be due to variations in the concentration of the feeding solution concentration or in the recovery factor. These two causes are easy to detect and correct, but if worsening in quality depends on problems of fouling or chemical damage of the membranes, nothing can be done to solve the problem.

The textile industry is very water intensive. Water is used for cleaning the raw material and for many flushing steps during the whole production. Produced waste water has to be cleaned from, fat, oil, color and other chemicals, which are used during the several production steps. The cleaning process is depending on the kind of waste water (not every plant use the same way of production) and also on the amount of used water. Also not all plants uses the same chemicals, especially companies with a special standard (environmental) try to keep water cleaned in all steps of production. So the concepts, to treat the water can differ from each other.

Sugar

The sugar industry is an important consumer of both drinking and industrial waters used in the refining process. Wastewaters produced have an high organic load and, initially in the refining process, also have an high particulate load. Thus, treatment of these wastewaters requires a process that combines mechanical, chemical, and biological treatment measures. The principle element of the purification process is based upon the aerobic activated sludge technology with one or more aeration stages.

Cement

A cement plant wastewater treatment system needs to be highly effective in order to remove the miniscule particulate that remains after cement production. This becomes even more important when a closed system the industry standard is in place and the waste water is reused repeatedly.

Bio CNG for Clean Energy
Clean Energy Green Environment

Bio CNG is the purified form of Biogas where all the unwanted gases are removed to produce >95% pure methane gas.

Bio CNG is exactly similar to the commercially available natural gas (CV: 52000 KJ/Kg) in its composition and energy potential. As it is generated from biomass, it is considered a renewable source of energy and thus, attracts all the commercial benefits applicable to other renewable sources of energy.

BENEFITS OF BIO CNG PLANTS:

- A non-polluting and renewable source of energy is created in biogas plant.- It is an excellent way of energy conversion.- Biogas plants produce enriched organic manure. This can be used as fertilizers.- Biogas as a gas provides improvement in the environment, and sanitation and hygiene.- The biogas plants provide a source for decentralized power generation.

Pay Back:
Plants are designed to pay back in 1-2 years.

Agitators

An agitator is a device or mechanism to put something into motion by shaking or stirring. There are three main types of agitation machines: the washing machine agitator, which rotates back and forth; the magnetic agitator, which contains a magnetic bar which rotates about a magnetic field; manual agitation, such as with a stirring rod.

Auto Bar Screen

The first unit operation generally encountered in wastewater treatment plants is screening. A screen is a device with openings, generally of uniform size, that is used to retain solids found in the influent wastewater to the treatment plant or in combined wastewater collection systems subject to overflows, especially from storm water. The principal role of screening is to remove coarse materials from the flow stream that could damage subsequent process equipment, reduce overall treatment process reliability and effectiveness, or contaminate waterways

We are offering sewage treatment plant with mbbr technology. the mbbr (moving bed bio reactor) technology allows the bacterial colonies to grow adhered to a surface, thus generating a bio film. The microorganisms that grow under these conditions are more resistant to the process alterations than in other biological treatment types. the microorganisms grow on plastic supports designed so that they have a high internal surface. These plastic supports are suspended and evenly distributed in the liquid phase. This kind of reactors can operate with very high loads in order to treat both industrial and civil effluents in reduced spaces; the amount of adhered activated sludge is higher, therefore the purification capacity is higher: 1 m3 of a typical packing gives from 350 to 500 m2 of surface, and there are 12 g of biomass per m2, thus here are 6 kg of biomass per m3. the mbbr technology can be used in order to enhance existing activated sludge treatment plants, where the amount of pollutants (determined by the cod and bod concentration) is the substrate for the growth of the microorganisms on the bio film, which degrade the pollutants and therefore purify the water.

We are offering reverse osmosis plants. the reverse osmosis is the finest water treatment since it can reduces the dissolved solids concentration by applying the necessary pressure to beat the osmotic pressure, and thus it creates two streams: concentrated brine and a purified water stream. This procedure can be used even to treat the seawater, remove the excess and then make it suitable for human consumption. For the specific case of wastewater treatment, it generates high quality water that can be used for the industrial process all over again.

We are offering sand filters with automatic back wash options. the sand filtration removes the suspended solids from the effluent coming from the secondary clarifier. During filtering operations the retained solids cause an increase of head losses; when apre-set value is achieved (usually 1.0 bar) backwashing with filtered water automatically takes place. Due to the weight of filtered solids, washing with water isnt enough to clean the filter media properly, so the backwashing is normally performed with both water and air.