A method of treating primary sludge and activated sludge produced by a wastewater system is disclosed. A portion of the activated sludge is wasted to form biological sludge. The biological sludge is thermally hydrolyzed. The method entails cooling the thermally hydrolyzed biological sludge by mixing primary sludge with the thermally hydrolyzed biological sludge. Thereafter, the combined sludge is directed through a pasteurization process and then to an anaerobic digester which performs anaerobic digestion of the combined sludge.

A closed system and method for efficient separation, drying, pasteurization and disposal of water treatment facility sludge effluent substantially reduces its water content, and thereby its volume and weight. A separator directs influent sludge into hydrocyclones that spin the sludge, separating most of the water into an upper chamber and dropping the solids into a lower chamber surrounded by an oil bath shell which heats and denatures the solids. Forced air through a venturi creates a vacuum in the lower chamber, causing much of the remaining water to vaporize and drawing the solids out onto a conveyor. Another oil bath shell surrounding the conveyor further heats the solids, while heated air forced across the solids further dries them while evacuating the vapor. The resulting dried sludge cake contains as little as ten (10%) percent water, while the closed system deters escape of odors and corrosive vapors.

A renewable energy microgeneration apparatus is disclosed that includes a mixing tank that mixes waste with a liquid, a buffer tank that receives and pre-warms the mixed waste, a pasteurization tank that pasteurizes on the pre-warmed mixed waste, a digestion tank that performs anaerobic digestion on the pasteurized waste, a de-watering device that separates liquid digestate and removes salt from the liquid, sensors that measure salinity and biogas quality, and a controller. The controller causes the transfer of digestate from the digestion tank to the pasteurization tank to the dewatering device, causes the de-watering device to separate the liquid and remove the salt from the liquid, monitors the salinity of the liquid and the quality of biogas using the sensors, and causes the mixing of the liquid with the waste and adjusts the feed rate of the waste to reduce the salinity of the waste and increase methane production.

An organic wastewater treatment method that includes a raw sludge removal step, a raw sludge concentration step, a biological treatment step, an excess sludge separation step, an excess sludge concentration step, a sludge mixing step, and a methane fermentation treatment step. The treatment method further includes a sterilization step for heating and sterilizing the concentrated excess sludge upstream of the sludge mixing step. At least one among: (1) the temperature to which the concentrated excess sludge is heated during sterilization, (2) the concentration of concentrated raw sludge and/or the concentration of the concentrated excess sludge, and (3) the mixture ratio between the concentrated raw sludge and the concentrated excess sludge is adjusted according to the fluctuation in the amount of raw sludge generated and the amount of the excess sludge generated, and the temperature of the mixed sludge is controlled to a temperature suited for methane fermentation.

An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.

The present invention relates to a new and novel process that combines several water treatment processes to biologically treat wastewater. The first treatment process is bioaugmentation using a select mixture of microorganisms grown from wastes collected from a Waste Water Treatment Plant (WWTP) to treat wastewater as it flows through its conveyance system. The second treatment process is employment of a flow control device that increases the holding capacity of the conveyance system to increase time for biological treatment and allow the contained water to be discharged at a controlled reduced and leveled rate. The third treatment process is a high-rate clarification system preferably using flocculating polymers to remove fine suspended solids from the wastewater that can be further treated in a series of containment structures positioned in a stream or riverbed to increase the treatment residence time.

A system and methods comprising a greenhouse for predrying a biosolids to reduce volume and weight; a conveyer belt operably connected to the greenhouse for conveying the biosolids from the greenhouse to a pasteurization system; the pasteurization system comprising a burner-fan to introduce hot air to the biosolids; the pasteurization system comprising a heat up belt to accept the biosolids from the greenhouse and a burner-fan for raising the biosolids temperature from ambient to at least 70 C.; the pasteurization system further comprising a pasteurization belt to hold the biosolids at 70 C. for at least thirty minutes; a biofilter system operably connected with the greenhouse and the pasteurization system for reducing odors; and bagging area to collect a final product.

A process of treatment of carbonaceous material, such as wastewater sludge or organic waste, includes performing a thermal treatment of the carbonaceous material, thereby providing thermally treated carbonaceous material, cooling the thermally treated carbonaceous material, thereby providing cooled carbonaceous material, the cooling being performed using a vacuum cooling procedure, and performing a post-treatment of the cooled carbonaceous material, and at least one carbonaceous material degassing.

The present invention provides a method for treatment of biomass material by fermentation, said method comprises a pre-treatment of the biomass material by thermal hydrolysis and wet explosion, resulting in an intermediate product having a dry matter concentration above 25% and temperature above 90 C. which is to be introduced to the fermentation, wherein a part of the content of the digestion tank used for the fermentation is recirculated and mixed with a part of the intermediate product from the pre-treatment.

Methods and systems for manipulating varied biological recyclable streams to produce agricultural admixtures are herein described. The resulting agricultural admixtures can be used to enhance crop yield, or as an animal provender. Managing the sources of varied biological recyclable streams can afford agricultural admixtures with controlled properties.