A regulating tank includes a tank member having an annular wall to receive wastewater. A circular pipe is connected to the tank member. A draining device drains the wastewater in the tank member to the circular pipe. A plurality of nozzles connected to the circular pipe to eject the wastewater in the circular pipe back to the tank member. When the wastewater is ejected by the nozzles, a temperature of the wastewater is reduced, and dissolved oxygen of the wastewater is increased.

The disclosure relates to a waste collection system designed for handling liquid and solid waste without reliance on running water. The system is also designed with modular components adapted for in-home installation, where the system can be quickly assembled and disassembled as needed, such as for moving the components to a new location based on environmental conditions. Moreover, the system is designed to facilitate easy conversions between a waste-separating toilet design and a more streamlined non-waste-separating toilet design when desired to maximize flexibility of the overall system.

The disclosure relates to a waste collection system designed for handling liquid and solid waste without reliance on running water. The system is also designed with modular components adapted for in-home installation, where the system can be quickly assembled and disassembled as needed, such as for moving the components to a new location based on environmental conditions. Moreover, the system is designed to facilitate easy conversions between a waste-separating toilet design and a more streamlined non-waste-separating toilet design when desired to maximize flexibility of the overall system.

Disclosed herein is a device for improving water quality, said device comprising: an inlet for inflow of liquid into the device; a hydraulic circuit for receiving liquid from the inlet, the hydraulic circuit comprising at least a first tank and a second tank, wherein the first tank is upstream of the second tank and wherein one of said first and second tanks is nested within the other of said first and second tanks; an outlet at a downstream end of the hydraulic circuit for discharge of liquid from the device; one or more contaminant separation elements in the hydraulic circuit for separation of contaminants from liquid passing therethrough using at least one of: gravitational separation; sized-based filtration; chemical separation; magnetic separation; electrolytic separation; and adsorption or attraction-based separation, wherein the first tank is a settlement tank for gravitational settlement of contaminants from the liquid.

An odor neutralization device for a wastewater lift station wastewater vent. The device is formed from a housing having a vertical standpipe with a first end securable to the receiver vent of a wastewater lift station and a second end extending above an admixture of essential oils and a surfactant. A baffle arrangement increases the velocity of air exiting or entering the wastewater lift station. The accelerated air is directed across the surface of the admixture for altering the characteristics of any odor laden air.

An odor neutralization device for a wastewater lift station wastewater vent. The device is formed from a housing having a vertical standpipe with a first end securable to the receiver vent of a wastewater lift station and a second end extending above an admixture of essential oils and a surfactant. A baffle arrangement increases the velocity of air exiting or entering the wastewater lift station. The accelerated air is directed across the surface of the admixture for altering the characteristics of any odor laden air.

The disclosure relates to a portable waste collection and sanitation system designed to handle liquid and solid waste, and while conserving water and minimizing odors. The sanitation system is also designed with modular components adapted for in-home installation, where the system can be quickly disassembled and relocated as needed, such as for moving the components to a new location based on environmental conditions.

A waste treatment system may include a liquid separator for removing water from solid waste, a mixing tank connected to the liquid separator for mixing the solid waste with an oxidizing agent, a heat exchanger connected to the mixing tank for collecting heat generated by an exothermic reaction caused by mixing the oxidizing agent with the solid waste, and a sanitizer connected to the liquid separator to sanitize the water removed from the solid waste. A waste treatment method may involve separating water from solid waste in a liquid separator, mixing the solid waste from the liquid separator with an oxidizing agent in a mixing tank connected to the liquid separator to cause an exothermic reaction, collecting heat from the exothermic reaction in a heat exchanger coupled with the mixing tank, and sanitizing the water from the liquid separator in a sanitizer.

A waste treatment system may include a liquid separator for removing water from solid waste, a mixing tank connected to the liquid separator for mixing the solid waste with an oxidizing agent, a heat exchanger connected to the mixing tank for collecting heat generated by an exothermic reaction caused by mixing the oxidizing agent with the solid waste, and a sanitizer connected to the liquid separator to sanitize the water removed from the solid waste. A waste treatment method may involve separating water from solid waste in a liquid separator, mixing the solid waste from the liquid separator with an oxidizing agent in a mixing tank connected to the liquid separator to cause an exothermic reaction, collecting heat from the exothermic reaction in a heat exchanger coupled with the mixing tank, and sanitizing the water from the liquid separator in a sanitizer.

Storage tanks, for example, underground septic tanks, and their methods of fabrication are provided. The tanks include a substantially liquid impermeable plastic vessel having a top, a bottom, and sides; a concrete container encasing and retaining the plastic vessel, the concrete container contacting the bottom and at least partially contacting the sides of the plastic vessel; and at least one opening for receiving effluent, for example, waste effluent, into the plastic vessel. The methods of fabricating the tanks include positioning a plastic vessel into an enclosure; introducing concrete into the enclosure about the plastic vessel; allowing the fluid concrete to cure to provide a substantially solid concrete container about the plastic vessel; and removing the plastic vessel having a concrete container from the enclosure. Vessel shape retaining devices are also disclosed. Aspects of the invention are uniquely adapted to underground storage.