HMR - Continuous Flow Treatment Systems
The HMR--2 is a continuous precipitation and clarification system. The HMR incorporates individual chambers designed to perform the following functions:
- pH Neutralization / Solids Precipitation
- Precipitate Flocculation
- Gravity Settler / Clarification
- Effluent Collection Clearwell
- Integral Sludge Ageing Chambers
The wastewater from the flow equalization tank is pumped into the HMR Reaction Chamber 1. This chamber is designed as a stirred tank reactor utilized for reacting the metal bearing influent through the addition of reagent chemicals. This reactor is equipped with pH measurement instrumentation used for proportional feed of reagent chemicals.
The effluent from the Reaction Chamber 1 flows by gravity into the pH Neutralization Chamber 2 where final pH adjustment occurs. This chamber is designed as a stirred tank reactor utilized for pH Neutralization the influent through the addition of reagent chemicals. This reactor is equipped with pH measurement instrumentation used for proportional feed of reagent chemicals.
The effluent from pH Neutralization Chamber 2 flows by gravity into flocculation chamber of the HMR. This chamber is also designed as a stirred tank reactor utilized for flocculation of the precipitates. Anionic polymer is injected to coagulate the precipitate, which allows for rapid settling in the subsequent clarification process.
The flocculated precipitate from the Flocculation Chamber flows by gravity into the Clarification Chamber. This chamber is designed as an up-flow, inclined plate type clarifier, which provides for gravity settling of the precipitate. The chamber is fitted with chevron style, inclined tube modules, which provide the settling surface area, required for the clarification process and creates the laminar flow environment necessary for effective clarification. The precipitate enters the clarifier and settles to the chamber bottom where it is then automatically pumped to the Sludge Age Tanks. The precipitate free effluent emerges from the clarifier and flows by gravity to the Effluent Clearwell Chamber where the effluent is pumped through a duplex multi media filter system, provided by others, to remove any suspended solids.
The HMR utilizes the dual internal sludge age tanks to allow the sludge to thicken prior to dewatering in the existing plate and frame filter press. One chamber is filled while the other is allowed to thicken the sludge. This improves the efficiency of the filter press and reduces the pressing cycle. As the slurry settles, any supernatant is manually decanted and pumped back to the system to be retreated.
HMR-15-2 / Continuous Flow Precipitation Systems rated for 15 gpm
Total Systems International, LLC