Tank configuration with enhanced denitrification

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough;
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary;
• and
• a gravity flow configuration to flow wastewater from the first water trough to the second water trough and to the wastewater inlet, wherein:
• the first water trough includes a biogrowth media, and
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall.

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough;
• and
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary, wherein:
• the first water trough includes a biogrowth media,
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall, and
• each of the first and second troughs comprise a first media, the first media selected from the group consisting of:
• elemental sulfur, sulfur-coated wood chips, sulfur-coated bio rings and combinations thereof.

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough;
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary;
• and
• a wastewater recycling system configured and positioned to recycle wastewater treated by one or more water troughs to above a wastewater surface of another water trough, wherein:
• the first water trough includes a biogrowth media, and
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall.

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough;
• and
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary, wherein:
• the first water trough includes a biogrowth media,
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall,
• the second trough further includes submerged aeration piping, the piping having aeration orifices and oriented across a bottom portion of the second trough, and
• the second trough also includes a first media that includes sulfur-coated bio rings.

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough;
• and
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary, wherein:
• the first water trough includes a biogrowth media,
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall, and
• the biogrowth media of the first trough is completely submerged and selected from the group consisting of:
• elemental sulfur, sulfur-coated wood chips, sulfur-coated bio rings and combinations thereof.

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough;
• and
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary, wherein:
• the first water trough includes a biogrowth media,
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall, and
• each of the plurality of water troughs is present in a same shared tank structure and each water trough shares an ongoing operational wastewater surface level corresponding to a location of a portion of the discharge channel that penetrates through the shared tank structure, the discharge channel comprising piping.

A wastewater treatment apparatus, the apparatus comprising:

• a plurality of water troughs for treating the wastewater including a first trough configured for flowing wastewater to a second trough and a third water trough;
• the third trough configured for receiving overflowing wastewater from the second trough via gravity flow, the third trough comprising elemental sulfur, the elemental sulfur being submerged in wastewater present in the third trough;
• and
• a discharge channel of the plurality of water troughs, the discharge channel having a wastewater inlet for receiving wastewater that has flowed from the first water trough and the second water trough, the wastewater inlet being configured to be stationary, wherein:
• the first water trough includes a biogrowth media, and
• the first water trough includes a wall having a plurality of passages positioned along a width of the wall and positioned along a height of the wall, the plurality of passages permitting water present in the first water trough to exit the first water trough via the plurality of passages in the wall.

A wastewater treatment system comprising:

• a plurality of sequentially arranged water troughs, wherein:
• a first water trough of the plurality of sequentially arranged water troughs includes a submerged aeration chamber (SAC) in which organic wastewater is degraded;
• an intermediate water trough of the plurality of sequentially arranged water troughs includes wood chips, the wood chips configured to provide denitrification of organic wastewater present in the intermediate water trough;
• and
• a third water trough,
• wherein the intermediate water trough includes an inlet wall with a height and a width and an outlet wall with a height and a width, each of the inlet wall and the outlet wall comprising a plurality of passages located up and down the height of each wall and located along the width of each wall, the passages of the plurality sized and positioned to allow water to flow into the intermediate trough and out of the intermediate trough, and
• wherein at least an operating wastewater surface level of the third water trough corresponds to a position of a discharge channel, the discharge channel configured to receive wastewater from the third water trough, the discharge channel having a stationary inlet.

A wastewater treatment apparatus comprising a series of sequential troughs, the series of troughs including:

• a first trough having means to treat wastewater by converting ammonia in the wastewater to both nitrite-N and nitrate-N under aerobic conditions;
• and
• a second trough having means to treat wastewater by converting nitrite-N and nitrate-N to nitrogen gas under anoxic conditions, wherein:
• at least a wall of the second trough has a plurality of passages through the wall allowing water to pass into or out of the second trough, the wall having a bottom, a top, and a width, wherein passages from the plurality of passages are located at various heights between the top and bottom of the wall, and wherein passages from the plurality of passages are located at various positions along the width of the wall, and
• in a last water trough of the sequential troughs, an operating wastewater surface level of the last water trough corresponds to a position of a stationary discharge channel, the discharge channel configured to receive wastewater from the last water trough, the operating wastewater surface level corresponding to the position of the stationary discharge channel during operation, the stationary discharge channel comprising a stationary inlet.