Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1992-09-18
1993-08-24
Silverman, Stanley S.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210724, 210737, 210747, 210750, 210912, 405128, 405129, C02F 120, C02F 166, C02F 162
Patent
active
052385809
ABSTRACT:
An improved method for treating leachate from a sanitary landfill is provided. The method includes the steps of adding a pH adjuster to elevate the pH of the leachate, such that ammonia nitrogen compounds, COD compounds, and VOCs form volatiles and heavy metals form insoluble compounds; combusting landfill gas to produce combustion products and to elevate the temperature of the leachate such that chemical activity is enhanced therein; gas stripping the volatiles from the leachate; precipitating the insoluble compounds from the leachate; and diffusing the combustion gases through the leachate to reduce the pH thereof to an acceptable discharge level.
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Green Environmental Services, Inc.
McCarthy Neil M.
Silverman Stanley S.
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