K. Pack Systems Private Limited

Activated carbon filters are most widely used for industrial and domestic waste water treatment. They are used after sand filter to remove the unwanted tastes; odors and organic compounds from waste water. Activated carbon will also remove random gas, some pesticides and varying amounts of iron, lead, manganese, copper and mercury.
It will not only remove other dominants such as nitrate or fluoride, bacteria, and the heavy metals.
This system, called a water polisher, will clarify the water and remove the gases and other common contaminants that cause bad taste and odors.

We offer to our clients corrugated plate packs which form the core part of various purification systems.
Features

• We use specially designed flow baffles to further promote equal and uniform supply to the plates.
• Smooth and hardened plate surface for reducing the frictional resistance between the separated material and the corrugated plates.
• Corrugated plates and casing made from glass fiber reinforced isopthalic polyester resin.
• The material used in production is resistant to frequently used chemical additives and temperatures.
• We also offer material like bisphenolic polyester resin for more aggressive conditions.
• Plate pack fitted with lifting eyes for easy removal and installation.
• We also offer plates made of other GRP resins like orthopthalic resin, bisphenol and vinyl ester resins.

Clarification is performed in rectangular or circular basins where the wastewater is held quiescent to permit particulate solids to settle out of suspension. To prevent-short circuiting and hydraulic disturbances in the basin, flow enters behind a baffle to dissipate inlet velocity. Overflow weirs, placed near the effluent channel, arranged to provide uniform effluent flow. Floating materials are prevented from discharge with liquid overflow by placing a baffle in front of weir. A mechanical skimmer collects and deposits the scum in a pit outside of the basin. Settle sludge is slowly moved toward a hopper in the tank bottom by a collector arm. Clarifier following activated sludge may be equipped with hydraulic pickup pipes for rapid sludge return.
Criteria for sizing settling basin are:

• Over flow rate (surface settling rate)
• Tank depth at the sidewall
• Detention time

Surface settling rate is defined as the average daily overflow divided by the surface area of the tank, expressed in cubic meters per square meter per day. Area is calculated by using inside tank dimension, disregarding the central stilling well or inboard weir troughs.

The first unit operation encountered in any municipal sewage/ waste water treatment plant is screening. The bar screen is device with opening of uniform size that is used to retain coarse and fine solids found in waste water. These are also to protect pumps, valves pipelines and other appurtenances from damage or clogging by rags and large objects. According to the method used to clean the screen surface, these screens are designated as hand-cleaned or mechanically cleaned K-PACK offers both manual and mechanical bar screens for coarse and fine screening.

The pipe flocculator is a plug flow reactor in which processes such as oagulation, flocculation, demulsification, precipitation and pH control can take place under highly controlled and well defined conditions.
The above mentioned processes take place under turbulent flow conditions. At the chemical injection points the pipe diameter is adapted to ensure instantaneous mixing of chemicals and wastewater. Through the cross-section of a pipe the mixing intensity is virtually homogeneous. Reaction time is determined by the pipe length and flowrate and based on the exact requirements, no excess is required. In the plug flow reactor the process can be influenced at any time as opposed to tank reactors, where only one conditions per tank can be maintained.
The use of Pipe Flocculator in combination with a flotation system can give COD removals of upto 95%. K-Pack Systems has a wide experience in chemical treatment, particularly in the use and selection of coagulants and flocculants in combination with a PFR pipe flocculator.
The PFR pipe flocculator is exceptionally suitable for our latest developments in the non-toxic bio-degradable coagulants and flocculants range.
Details and Characteristics

• High quality and durable materials like HDPE, PVC, MS pipes.
• No Short circuiting and hardly and back mixin.
• No retention time distribution.
• Homogeneous mixing throughout the cross section.
• Completely predictable and controlled mixing environment.
• No moving parts.
• No additional energy source.
• All required process conditions and chemical additions in a single unit.
• Uniform flow growth.
• Small space requirements.
• Exchange mixing pieces.

Available Models

• Standards units are available upto a flow of 400 m3/hr.
• Customized units for special applications.
• Conventional flash mixer and flocculator with agitating mechanism..

Pressure sand filters has been used to polish secondary effluent or to produce effluent that is low in suspended solids. Filteration consists of passing waste water effluent through a filter medium that can strain out the colloidal particles. The filtering media may be fine sand, anthracite, mixed media, diatomaceous earth or filter fabric.
The solids accumulate in the filter media; therefore, backwashing using clean water in the opposite direction of flow must be accomplished periodically to control the head loss through filtration system.

SBR is an activated sludge wastewater treatment system for removing dissolved and suspended organic materials and nutrients. Due to this new technology industrial wastewater can now be treated biologically in ideal conditions, regardless of flow or load variations. Phosphorous and nitrates can be removed biologically as well.
SBR Operation Philosophy
Sequencing Batch Reactor actually represent a very elementary form of treatment process known as "Fill and Draw". Wastewater added to a reactor is treated to remove undesirable component, and is subsequently discharged. The SBR reactor is a self-contained system incorporating equalization, aeration and clarification, within the confines of a Single basin.
The SBR uses the latest biomass conditioning technology. This enable the SBR system to attain nutrient control without the addition of chemical and to out perform continuous "flow through systems".
Operation
Normally the process follows the basic steps of AERATE, SETTLE and DECANT. The actual cycle time will vary with the sewage results desired. If only BOD reduction is desired, a cycle time as 3 hours may be used. If further treatment, to obtain nitrification/ denitrification if required, the cycle time can be extended to accommodate the process requirements.
The AERATE phase in the SBR system is typically time/level controlled and can be adjusted depending on the required removal efficiency. The AERATE phase is followed by the SETTLING PHASE. The settling represents the quiescent phase during which no aeration or mixing occurs and is also time/level controlled. The last step is the DECANT step representing the discharge of clarified sewage controlled by level in the reactor.

• Aeration Phase: Depending on capacity (max 4hrs).
• Settling Phase: Normally 45 to 60 minutes.
• Decant Phase: Within 30 min, reduction from maximum to minimum.