초록 ▼

A closed loop waste treatment and water recycling system that includes a delivery system, an anoxic reactor, an aerobic digestion chamber, a filtering system, an adsorption system, a disinfecting system and a water return system. The delivery system includes one or more flush-type toilets and urinal

A closed loop waste treatment and water recycling system that includes a delivery system, an anoxic reactor, an aerobic digestion chamber, a filtering system, an adsorption system, a disinfecting system and a water return system. The delivery system includes one or more flush-type toilets and urinals which receive flush water from the water return system and deliver the toilet and urinal waste and flush water to the anoxic reactor. The anoxic reactor contains bacteria which utilizes organics in the toilet waste to convert oxidized nitrogen compounds, such as nitrates, to nitrogen gas, produce bicarbonates and other products. The bacteria, in accomplishing this, lower the organic load on subsequent processes. A denitrified liquid containing bicarbonates and reduced amounts of organics is transferred to the aerobic digestion chamber, which contains biologically active solids and in which organic carbon, organic nitrogen, and ammonium compounds are oxidized by bacteria to obtain a liquid product high in concentration of oxidized nitrogen compounds such as nitrates and low in soluble carbonaceous compounds. This liquid product is filtered, treated with activated carbon, disinfected, and subsequently returned to the toilets and urinals as colorless, clear and odorless flush water containing oxidized nitrogen compounds such as nitrates. The oxidized nitrogen compounds produced in the aerobic digestion chamber insure prevention of odors in the system. As a result of the effective management of nitrogen in the system, it can be made of reasonable size, undesirable odors are avoided and a desired slower buildup of solids in the system is achieved.

대표청구항 ▼

In a multi-stage method for treating toilet waste and recycling treated liquid therefrom, the steps of: a. receiving said waste at a first stage and flushing said waste from said first stage with flush water containing nitrates thereby to form a liquid mixture of the waste and nitrate-containing flu

In a multi-stage method for treating toilet waste and recycling treated liquid therefrom, the steps of: a. receiving said waste at a first stage and flushing said waste from said first stage with flush water containing nitrates thereby to form a liquid mixture of the waste and nitrate-containing flush water, b. transferring said liquid mixture to a second stage whereby said mixture is agitated and is maintained under anoxic conditions so as to cause denitrification of said liquid mixture and generation of nitrogen gas, said nitrogen gas being vented from said second stage in such manner as to prevent the entry of oxygen into said second stage thereby to assist in maintaining the anoxic conditions in said second stage, c. transferring liquid from said second stage to a third stage containing biologically active solids and liquid and being maintained under aerobic conditions, air being passed through the mixture in said third stage at a sufficient rate to cause nitrification of nitrogenous compounds in said mixture, thereby to produce nitrates therein, the dissolved oxygen in the mixture in said third stage being greater than 2 mg/l, d. transferring the nitrate-containing mixture from said third stage directly to a filtering stage wherein said mixture is filtered to separate nitrate-containing water therein from the solids therein, the concentration of nitrate nitrogen in said nitrate-containing water being at least 50 mg/l, e. cycling solids from said filtering stage back to said third stage; and f. cycling said nitrate-containing water from said filtering stage to said first stage thereby to serve as said nitrate-containing flush water in said first stage.